Methods for improving the productivity of oil producing wells

a technology for oil producing wells and productivity, applied in the field of methods for improving the productivity of oil producing wells, can solve the problems of decreasing the relative permeability of oil, reducing the productivity of wells, and conventional treatments for increasing the hydrocarbon production of such wells
US8261825B2Inactive Publication Date: 2012-09-113M INNOVATIVE PROPERTIES CO +1
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Patents(United States)
Current Assignee / Owner
3M INNOVATIVE PROPERTIES CO
Publication Date
2012-09-11
Estimated Expiration
Not applicable · inactive patent

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Abstract

Methods for treating clastic formations bearing brine and at least one of black oil or volatile oil using a composition containing a nonionic polymer and solvent. The solvent at least one of solubilizes or displaces at least one of brine or oil in the clastic formation. Methods for treating a formation having at least one fracture using a composition containing a nonionic polymer and solvent. Methods for making a composition for treating a clastic formation bearing brine and at least one of black oil or volatile oil.
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Description

CROSS REFERENCE TO RELATED APPLICATIONS

[0001] This application is a national stage filing under 35 U.S.C. 371 of PCT / US2008 / 084719, filed Nov. 25, 2008, which claims priority to U.S. Provisional Application No. 60 / 991,590, filed Nov. 30, 2007, the disclosure of which is incorporated by reference in its entirety herein.BACKGROUND ART

[0002] It is known in the subterranean well drilling art that in some wells (e.g., some oil wells) brine is present in hydrocarbon-bearing geological formations in the vicinity of the wellbore (also known in the art as the “near wellbore region”). The brine may be naturally occurring (e.g., connate water) and / or may be a result of operations conducted on the well.

[0003] In the case of some wells (e.g., some oil wells), two phases (i.e., an oil phase and a gas phase) may form in the near wellbore region as the pressure falls below the saturation pressure (bubble point) of the oil. The presence of gas can cause a large decrease in relative permeability to oil,...

Claims

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